Hyper-V PCIe Passthrough

add_hba_passthrough.ps1

#Find pci devices:
(Get-PnpDevice).Where{$_.Class -like '*SCSI*'}|Select-Object -Property FriendlyName,InstanceId

FriendlyName                        InstanceId
------------                        ----------
Microsoft iSCSI Initiator           ROOT\ISCSIPRT\0000
Microsoft Storage Spaces Controller ROOT\SPACEPORT\0000
Dell PERC H200 Adapter              PCI\VEN_1000&DEV_0072&SUBSYS_1F1D1028&REV_03\4&866E9CF&0&0010
Dell 6Gbps SAS HBA                  PCI\VEN_1000&DEV_0072&SUBSYS_1F1C1028&REV_03\4&37CB7C8E&0&0018
Microsoft VHD Loopback Controller   {8E7BD593-6E6C-4C52-86A6-77175494DD8E}\MSVHDHBA\1&3030E83&0&01




#Find the one you want

$device = Get-PnpDevice -FriendlyName "Dell 6Gbps SAS HBA"
$instanceID = $device.InstanceId

#Disable the device, so you can enable it in hyper-V
Disable-PnpDevice -InstanceId $InstanceId -Confirm:$false

#Show devices disabled
Get-VMHostAssignableDevice

InstanceID   : PCIP\VEN_1000&DEV_0072&SUBSYS_1F1C1028&REV_03\4&37CB7C8E&0&0018
LocationPath : PCIROOT(40)#PCI(0300)#PCI(0000)
CimSession   : CimSession: .
ComputerName : HYPERV1
IsDeleted    : False

$locationPath = (Get-VMHostAssignableDevice)|Select-Object -Property LocationPath

$VM = Get-VM "Name OF VM"

Add-VMAssignableDevice -VM $VM -LocationPath $locationPath -Verbose

#Now the device should be assigned directly to the Virtual machine